<template>
  <view>
    <view class="goods-list">
      <view v-for="(goods, i) in goodsList " :key="i" @click="gotoDetail(goods)">
        <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 请求参数对象
        queryObj: {
          cid: '',
          query: '',
          pagenum: 1,
          pagesize: 10
        },
        goodsList: [],
        total: 0,
        // 节流阀
        isloading: false
      };
    },
    onLoad(option) {
      this.queryObj.query = option.query || ''
      this.queryObj.cid = option.cid || ''

      this.getGoodsList()
    },
    onPullDownRefresh(){
      // 重置关键数据
      this.queryObj.pagenum = 1
      this.total =  0
      this.isloading = false
      this.goodsList = []
      
      // 重新发起网络请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    },
    onReachBottom() {
      if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕!')
      
      if(this.isloading) return
      // 让页码自增+1
      this.queryObj.pagenum++
      this.getGoodsList()
    },
    methods: {
      async getGoodsList(cd) {
        // 打开节流阀
        this.isloading = true
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
        // 关闭节流阀
        this.isloading = false
        // 关闭下拉刷新
        cd && cd()
        
        if (res.meta.status !== 200) return uni.$showMsg()

        this.goodsList = [...this.goodsList,...res.message.goods]
        this.total = res.message.total
      },
      gotoDetail(goods) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + +goods.goods_id
        })
      }
    }
  }
</script>

<style lang="scss">
  
</style>
